Diestock



Dec. 9, 193.0. R E HYDE 1,784,099

QIEsTocK Filed Marrh 12. 1928 NVENTOR.

BYRQzp/Z Hyde A TTORNEYS Patented Dec. 9, v1930 UNITED STATES PATENTOFFICE RALPH E. HYDE, F CLEVELAND, OHIO, ASSIGNOR TO THE OS'IIER`MFG,COMPANY, OF CLEVELAND, OHIO,- A CORPORATION 0F OHIO DIESTOCK The presentinvention relates, as indicated, to a stamped receding-Chaser type diestock. The invention is directed to a novel and advantageous die stockof the character described, and the primary object of the invention isto providean inexpensive die stock of the character described formedfrom sheet metal. To the accomplishment of the foregoing and relatedends, said invention, then, consists of the means hereinafter fullydescribed and particularly pointed out in the claims. c

The annexed drawing and the following description set forth in detailone method and one product exemplifying my invention, such disclosedprocedure and product Aconsisting, however, but several of variousapplications of the principle of my invention.

In said annexed drawings:

Fig. 1 is an elevation, partly in section upon the line 1-1 of Fig. 2'Fig. 2 is a bot.- tom plan view of the same; ig. l3 is a section takensubstantially upon theline 3-3 of Fi 1, looking in the direction of thearrows; anFig. 4 is a transverse section of amodification.

Referring more particularly to the drawings, it will be seen that thereference numeral l indicates a tubular member provided adjacent itsupper end with a shoulder 2 separating the upper end 3 of the tubularmember 1 from the lower restricted end, 4

thereof. Adjacent the lower end of the .section 4, there is provided asecond internal shoulder 5 defining a still further constricted section6 which is interiorly threaded as at 7.

A second tubular member 8 is exteriorly threaded as at 9 and is formedat its one end with an external annular flange 10. The threads 9 areadapted to cooperate with the threads 7, said tubular member 8 being ofsuch diameter as to be telescoped within the tubular member 1. j c

The member 1 is preferably formed from flat sheet metal by rolling orstamping the shoulders 2 and 5 and then forming the stamped blank into atube. The tubular member 8, may be, and referably is, similarly formed,the flange 10 eing formed by rolling or stamping I before the blank isformed into a tube. VAn annular ring 11 which is substantially L-shapedin cross section rests upon the shoulder 2 and secures in place a collar12, the latter being received between the ring 11 and the wall of theportion 3 of the tubular member 1.4V Tappedvapertures 13 are adapted toreceive thumb screws 14 for clamping work in position in said stock.

To the flange 10 of the tubular member 8 there is securedv a compositemember comprising a pair of plates 15 andl.V The plate 15, formed fromsheet metal isprovided with a substantially central aperture 17 and witha plurality of 'rebent portions" 18 forming grooves 19 open at their;`upperedges as at-20. Said plate 15 is further provided at its oppositeends with semi-cylindrical portions 21 opening inthe same plane with theopen edges of the grooves 19. i

The plate '16 is provided with a substantially central aperture 22,adapted to register i With'the aperture 17, and is furtherformed at itsYopposite ends with semi-cylindrical portions 23 adapted to mate with theportions y21 to form cylindrical handle sockets. In

assembling the die stock, the plates 15 and 16 are secured to each otherand to the flange l0` by means of rivets 2l, or the'like, it being notedthat the plate 16 closes the open upper edges 20 of' the grooves 19.

A pair of bearing rings 25 and 25 are received upon `the externalsurface of the portion 6 of the tubular member 1, said ring 25 beingsupported by a slight shoulder 26, and a collar lcomprising a pairofpla-tes 28 and 29 is journalled on said section 6 between said collars25 and 25. The member 29 is provided with a peripheralv downturnedflange 30 which snugly surrounds the member 28. The members 28 and 29are pierced fas at 32 and 31, respectively, to receive an end of apost'33, said end being upset to secure the post in position. It will benoted that one post 33 is provided for each of said grooves 19. One face34 of each of said posts 33 is formed as a cam,`and the end of each ofsaid posts extends through an aperture 35 in the'rebent portion 18,7thustraversing the groove 19, the face .34 of the post being inwardlydirected. It will be seen that the plate 16 cooperates with the rebentportions 18 to transform the grooves 19 into chaserreceiving sockets. Achaser 36 is received in each lof said sockets with its outer end incontact with the' cam face 34 of a post 33, the cutting edge 37 of eachcam extending into the aperture 17. The cylindrical handle sockets areinteriorly threaded as at 56.

In operation, a piece of work is inserted in the stock and is clampedtherein by means of the thumb screws 14, the t-ubular member 8 havingbeen rotated to back the same 0E to its most extendedposition. The workhaving been inserted in the stock, the tubular member 8 is rotated inthe opposite direction, whereby it is advanced into the tubular member 1through the agency of the threads 7 and 9. The tubular member 1 is heldstationary by the clamping engagement of the thumb screws 14 upon thework, but the collar Q8, 29 is free to rotate with respect to thetubular member 1. It will bereadily apparent that, as the tubular member8 advances into the tubular member 1, the cam faces 34 of the posts 33will allow the dies 36 to recede from their projection into the aperture17, and that the result of the operation of the present die stock willbe a tapered thread.

In the modification disclosed in Fig. 4, the i tubular member 38 is, inall particulars, similar to the tubular member 1. The tubular member 39,however,k is provided with a flange 40 which takes the place of theplate 16 in the modification illustrated in Fig. 1. A plate 41 formedwith rebent portions 42 providing grooves 43 is secured to said flange46 by means of rivets, or the like 44, the lflange 40 closing the openupper edges of said grooves 43. A pair of plates 45 and 46 arejournalled upon said tubular member 38 'between bearing rings 47 and 48,and said plates 45 and 46 are pierced as at 49 for the accommodation ofan end of each of a. plurality of cam posts 50, each of said posts beingprovided with a cam face 51. The flange 40 is apertured as at 52 and therebent portions are apertured as at 53 for the accommodation of saidposts 50.

A further difference between the modification now under discussion andthat disclosed in Fig. 1 lies in the fact that the handle sockets areformed by the plates 45 and 46, the plate 45 being provided withoppositely disposed semicylindrical portions 54, while the plate 46 isformed with mating oppositely disposed semicylindrical portions 55. Theportions 54 and 55 cooperate to form cylindrical handle sockets whichare interiorly threaded as at 56. l

The operation of the modification disclosed in Fig. 4 is identical withthat of the modification illustrated in Fig. 1, the only differencebeing that the tubular member .39, instead of being directly rotated bythe handles, is rotated through the engagement of the cam posts 50 inthe apertures 52 and 53.

Other forms may be employed embodying the features of my inventioninstead of the one here explained, change being made in the form orconstruction, provided the elements stated by any of the followingclaims or the equivalent of such stated elements be employed, whetherproduced by my perferred method or by others embodying steps equivalentto those stated in the following claims.

I therefore particularly point out and distinctly claim as my invention:

1. In a device of the class described, a tubular element, a secondtubular element threadedly telescoped in said first tubular element andprojecting therefrom, a flange on the projecting end of said secondtubular element, a member secured to -said flange and i formed toprovide a guideway for a die, a 'shoulder on said first tubular elementfacing said flange, a member journalled on said first tubular elementand backed by said shoulder, and a cam pin secured to saidlast-mentioned member and extending transversely through sai-d guideway,one of said members being formed to provide a pair of oppositely openingsockets at substantially diametrically opposed points on its periphery.V

2. In a device of lthe class described, a tubular element, a secondtubular element threadedly telescoped in said first tubular element andprojecting therefrom, a flange on the projecting end of said secondtubular element, a composite element secured to said fiange andcomprising a plate and a second plate, means on said second plateforming a guideway for a die, and means on said first plate cooperatingwith means on said second plate to form a substantially cylindricalsocket projecting from the periphery of said Vcomposite member.

3. In a device of the class described, a tubular element, a secondtubular element threadedly telescoped in said first tubular elementand'projecting therefrom, a flange on the projecting end of said secondtubular element, a composite element secured to said vfiance andcomprising a plate and a second plate, and means on said first platecooperating with means on said second plate to form a substantiallycylindrical socket projecting from the periphery of said compositemember.

4. In a device of the class described, a tubular element, a secondtubular element threadedly telescoped in said first tubular element andprojecting therefrom, a flange on the projecting end of said secondtubular element, a composite element secured to said fian'ge andcomprising a plate and a second plate, means on said second plateforming a guideway for a die, means on said first plate cooperating withmeans on said second plate to form a substantially cylindrical socketprojecting from the periphery of said composite member, and a pluralitof fastening elements passing through said ange and said pla-tes to holdsaid plates in assembled relation to each other and to said flange.

Signed by me this 5th day of March, 1928.

Y RALPH E. HYDE.

